Short answer: Matthew 18:15–17 gives Jesus' own order for addressing sin within the community. The first step is a private conversation between the two people involved, and the stated goal is gaining back the brother. If that fails, one or two witnesses are added, and only persistent refusal reaches the assembly. The passage frames correction as patient pursuit aimed at restoration, not exposure.
The setting of Matthew 18:15-17: one lost sheep, then a brother who sins
Matthew 18 opens with the disciples asking who is greatest in the kingdom, and Jesus answers by placing a child before them and speaking about humility and care for little ones. That question sets the tone for everything that follows, including the instructions about a brother who sins. Just before verse 15 comes the parable of the lost sheep: the shepherd leaves the ninety-nine and goes after the one. The parable ends with the Father's will that not one of these little ones should perish (18:14). The teaching on restoring a sinning brother grows directly out of that picture. The disciple goes after the one because the shepherd does.
The passage is instruction, not story. Jesus gives a sequence of steps, and each step is conditioned on how the other person responds. First, go alone and show him his fault privately. If he listens, the matter ends there and the brother is gained back. If not, take one or two others, echoing Israel's standard that a matter is established by two or three witnesses rather than by a single accuser. If he still refuses, tell the gathered community. Only after refusing the assembly does the final step come. The escalation is deliberate, and its first move is a private conversation, not a public announcement.
The verses that follow matter for reading this unit. Jesus speaks of binding and releasing, and of two or three agreeing in prayer, which places the whole passage inside the community's life together under his authority. The aim stated in the text is gaining back the brother, so the passage cannot be recruited for shaming or gossip without contradicting its own shape. The steps widen only as resistance continues, and the last resort is a reckoning, not a campaign. Read this way, the passage is pastoral discipline in the service of restoration, modeled on the shepherd who goes after the lost one.
Going to your brother: the wording of Matthew 18:15-17
The instruction begins with a relationship, not a category. Jesus says, "If your brother sins against you," and that word brother sets the tone for everything that follows. This is family language, the same kind of language used earlier in the chapter about the lost sheep. The sin named is personal: it is sin against you, not sin in general and not the failures of strangers. That matters because it limits the scope of the command. Jesus is not handing his disciples a license to police the world. He is telling a person who has been wronged how to move toward the one who wronged him.
The first step is a private conversation. Jesus says to go and "show him his fault between you and him alone." The phrase is plain: make the wrong known, name it, do not hint at it or talk around it. But the setting is just as plain. Between you and him alone rules out the audience, the group chat, the sideways comment to a mutual friend. The stated goal is not victory in an argument but gaining back the brother, the same word used earlier in the chapter for finding the lost sheep. The passage assumes the relationship is worth recovering.
Only if he does not listen does the circle widen. Jesus sends one or two more, tying the step to the older requirement that "at the mouth of two or three witnesses every word may be established." The witnesses are there to confirm the facts, not to build a case for public shame. Then comes the assembly, and finally the hard phrase, "as a Gentile or a tax collector." That describes a changed relationship, not permission for contempt. The aim throughout is still gaining the brother, and the first move Jesus commands is the quiet, private one.
Private pursuit before public accusation
The setting matters before the steps do. Jesus has just told the parable of the lost sheep, and he ends it with the Father's will that not one of these little ones should perish (18:14). That sentence supplies the motive for what follows. A shepherd who leaves the ninety-nine to go after the one does not begin by announcing the sheep's failure to the flock. So when Jesus says a brother who sins should be approached privately, the parable is still ringing in the disciples' ears. The pursuit begins with one person going, not with a crowd watching.
Notice the order and the goal. The first step is a private conversation between the two of them, and the stated aim is that you have gained back your brother (18:15). The text does not say the aim is to win an argument or to warn everyone else. Only if he does not listen does the circle widen to one or two more, and Jesus ties that step to the older standard of evidence, where a matter was established by two or three witnesses rather than by a single accuser (18:16). The assembly comes last, after repeated refusal, not first.
These verses sit inside a longer teaching about the community's life under Jesus' authority. Immediately after the assembly step, Jesus speaks of binding and releasing and of two agreeing in prayer (18:18–19). This is not a private grievance procedure tucked away in a corner; it concerns how the gathered disciples handle sin among them. Yet the direction of travel is always toward restoration, which rules out public shaming and gossip. The passage gives no license for exposure. It commands patient, ordered pursuit, and it places the widest step last.
Where readers disagree about confronting sin
The first disagreement is what sin Jesus has in view. Verse 15 says "If your brother sins against you," and that phrase is explicit, so many readers limit the procedure to personal offenses. Others point to the surrounding chapter, where the shepherd searches for one stray sheep and the Father wills that none perish, and conclude the steps cover sin more broadly. Notice what the text actually does: it begins with a private conversation between the two people involved. Whatever the scope, the passage gives no warrant for public shaming or for spreading a matter through gossip. The first move is always quiet and personal, aimed at gaining the brother back.
The second disagreement concerns what "tell it to the assembly" looks like. Some readers hear the whole gathered congregation, others a smaller group of elders, and others an informal circle of believers who know the parties. The third concerns treating someone "as a Gentile or a tax collector." Since Jesus elsewhere welcomes tax collectors at table, some read this as sending the person out in mission, while others read it as removing ordinary fellowship. Both readings take the phrase seriously. What remains clear is that the steps are ordered, that witnesses protect the accused from a single voice, and that the goal stated in verse 15 is restoration, not punishment.
A further question is whether the binding and releasing of verse 18 belongs to this procedure or stands as a separate saying about the community's authority. Readers differ, and the text does not settle it for us. What stays central across these disagreements is that the community acts under the same Lord and needs the same mercy it extends. Verse 14 grounds the whole process in the Father's will that not one of these little ones perish. That aim rules out harsh exclusion as an end in itself. The procedure exists to seek the straying, and every step should be measured against that purpose.
The shepherd's pursuit behind the private word
Matthew 18:15–17 does not stand alone. It follows the parable of the shepherd who leaves the ninety-nine for the one that wandered, and Matthew 18:14 gives the reason: the Father in heaven does not will that one of these little ones perish. The same Jesus who tells that story gives these instructions. So the pursuit of a straying brother is not a project of the offended party; it is the shepherd's own instinct passed to his disciples. Notice the aim stated in 18:15: you have gained back your brother. The passage is about recovery, not punishment, and its first move is a private conversation, one person to one person, with no audience and no leverage.
The one giving these instructions is the one who will himself be sinned against. He will be handed over, tried, and treated as an outsider, and he will not answer by treating his own as outsiders. That shapes how we read the last step of 18:17. Being like a Gentile or tax collector is spoken by the one who kept eating with tax collectors. The step is real, but it is not permission for public shaming or for spreading the matter further than the text allows. The goal named in 18:15 governs every step that follows. The gospel gives both the motive and the manner: we pursue because we were pursued while we were still far off.
The authority in 18:18–19 sits underneath this whole process. Jesus gives his gathered people real weight: what they bind and release on earth stands in step with heaven, and the Father hears the agreement of two or three. That is not a blank check for personal vendettas; it is the gathered community acting in line with the shepherd's will that the little ones not perish. The call to gain back a brother rests on the one who came to seek and gain back the lost. We go to the wanderer because he first came for us, and we go gently because we know what we were.
What faithful response looks like in ordinary life
Start with yourself, because that is where this passage starts. Jesus places the first move on the person who was sinned against: go and show your brother his fault, alone, before you say a word to anyone else. That order rules out the group text, the prayer request that is really a report, and the conversation with a friend that rehearse the offense without ever addressing it. Speak plainly about the wrong rather than hinting and hoping he notices. And fix the aim on gaining your brother back, not on winning the argument or proving the point. The chapter opens with a warning about causing little ones to stumble, so go low, not loud.
If the private word is refused, add one or two witnesses rather than widening the circle further. The purpose is not to build a case but to establish the matter honestly, with people who can hear both sides. This is not permission to recruit allies or to let the story spread. Notice how restrained the steps are: one person, then two or three, and only then the assembly. Congregations often reverse that order, discussing a matter widely long before anyone has spoken to the person involved. Keep the circle as small as the text keeps it, and let the assembly be a last step, never a first one.
Do all of this with the humility of the chapter's opening and the shepherd's patience of its parable. The shepherd leaves the ninety-nine and rejoices when he finds the one, and it is not the will of the Father that one of these little ones should perish. Yet obedience does not guarantee the outcome. The text itself describes a brother who may refuse to listen, and it does not promise that every conversation ends in restoration. So speak, wait, and keep the door open, trusting God with a result that was never ours to control.
Biblical fidelity check
Read closely, the passage is ordered and specific. The sin named is sin against you, and the person addressed is your brother, family language rather than talk about outsiders. The first move is private: go and show him his fault between you and him alone. The goal is stated in the same breath: that you have gained back your brother, echoing the lost sheep of 18:12–14. Only refusal moves the matter outward, first to one or two witnesses, then to the assembly. The risk here is turning a careful, staged, restoration-minded process into a license for public accusation.
Genuine disagreements remain. Some readers limit the sin to personal offenses because against you is explicit; others see the wider chapter pointing beyond it. Readers also differ on what telling the assembly means in practice, on whether treating someone as a Gentile or a tax collector means mission or removal from fellowship, and on whether 18:18 belongs to this procedure. What stays central is ordered, private-first address aimed at restoration, carried out by people who know they stand under the same Lord and need the same mercy.
Related studies for Matthew 18:15-17
For further study, compare this passage with Matthew 1: Genealogy and Birth of Jesus on restoring someone gently, Matthew 10: Jesus Sends the Twelve with Authority on forgiving as God forgave, Matthew 12: Lord of the Sabbath and Sign of Jonah on the shepherd seeking the lost, and Matthew 13: Parables of the Kingdom on restoring the fallen with a spirit of gentleness.
Frequently asked questions
Should I confront a fellow Christian who sins against me, or just forgive and move on?
Jesus tells his disciples to go and show the fault privately rather than skipping the conversation. Forgiveness and honest address are not opposites in this passage; the pursuit is aimed at gaining the brother back, which is an act of love, not scorekeeping. The setting matters: this is a personal offense between two people, and the first move is a conversation alone, not a public report. Moving on without a word can leave both parties wounded and the sin unaddressed, while confrontation can become harsh if the goal shifts from restoration to winning.
What does it mean to treat someone as a Gentile or a tax collector?
In the setting of Matthew's Gospel, Gentiles and tax collectors were outside the circle of fellowship, and Jesus says the unrepentant person is to be regarded that way. The text describes a changed relationship, not permission for contempt, shaming, or gossip. It comes only after private conversation and witnesses have both been refused, so it is a last step, not a first reaction. Even then, Jesus' own ministry toward tax collectors and outsiders keeps this from becoming a license for cruelty.
When is it right to bring a sin before the whole church?
According to Matthew 18:15–17, the assembly hears the matter only after the private conversation and the witnesses have both been refused. The sequence is deliberate: privacy first, then a small circle, then the community. Bringing a sin to the church before those steps inverts the order Jesus gives and turns correction into exposure. The purpose at every stage remains gaining back the brother, so even the widest step is pursued with restoration in view.
